Xerox Phaser 7400 Service Manual

4-12 Phaser 7400 Color Printer Service Manual
Engine Power-Up Sequence (BIST)
The following checks are made by the printer’s firmware at each power-up.
1. Engine Control Board logic check
2. Imaging Unit (Missing, NVRAM (CRUM) Error, CRUM ID, Life Over)
3. Fuser (Missing, NVRAM (CRUM) Error, Life Over)
4. Toner Cartridge (Missing, Life Over)
5. Transfer Roller (Missing, Life Over)
6. ADC Sensor (Error)
7. All paper sensor (Jam)
8. Door(s) (Open)
9. Environment Sensor (Error)
10. NVRAM (NVRAM error)
11. Image Processor Board POST Diagnostic check
4
Does the error persist? Replace the
Control Panel
(
page 8-111).
Complete.
5
Check voltages at the Engine Control Board.
Disconnect the POWER connector.
Is the voltage at each POWER pin correct?
Replace the
Engine Control
Board
(
page 8-112).
Go to Step 7.
6
Check the POWER connector.
Reconnect the POWER Connector and cycle
printer power.
Does the error persist?
Replace the LVPS
(
page 8-121).
Complete.
7
Check voltages at the Image Proccesor
Board.
Disconnect the CUIF connector.
Is the voltage at each POWER pin correct?
Replace the
Image Processor
Board
(
page 8-113).
Go to Step 9.
8
Check voltages at the Engine Control Board.
Disconnect the POWER connector.
Is the voltage at each POWER pin correct?
Replace the
Engine Control
Board
(
page 8-112).
Replace the
LVPS
(
page 8-121).
Troubleshooting Procedure Table

Xerox Phaser 7400 Specifications

General

Color	Yes
Print technology	Laser
Maximum resolution	600 x 1200 DPI
Time to first page (black, normal)	12 s
Print speed (black, normal quality, A4/US Letter)	40 ppm
Print speed (color, normal quality, A4/US Letter)	36 ppm
Storage media	HDD
Internal memory	512 MB
Processor model	PowerPC
Maximum internal memory	1 MB
Internal storage capacity	20 GB
Total input capacity	800 sheets
Maximum input capacity	3000 sheets
Paper tray 2 input capacity	350 sheets
Auto document feeder (ADF) input capacity	1650 sheets
Maximum print size	297 x 420 mm
Paper tray media types	Envelopes, Labels, Transparencies
Non-ISO print media sizes	Executive (184 x 267mm), Folio (media size), Letter (media size), Statement (140 x 216mm), Legal (media size)
Maximum ISO A-series paper size	A3
Power requirements	100-240V, 50/60Hz
Networking features	Fast Ethernet
Supported media weight(s)	270 g/m²
Maximum operating temperature range (T-T)	10 - 32 °C
Certification	FCC p.15 A, CE
Storage temperature (T-T)	-20 - 60 °C
Operating temperature (T-T)	-4 - 140 °F
Storage relative humidity (H-H)	10 - 95 %
Operating relative humidity (H-H)	20 - 80 %
Maximum duty cycle	150000 pages per month

Weight and Dimensions

Dimensions (WxDxH)	1438 x 623 x 975 mm